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561 Knickerbocker Avenue

Brooklyn, NY 11237BBL 3-03335-0001Map

Owner of record: Knickerbocker Squareassociates L P

561 Knickerbocker Avenue is an elevator apartment building built in 1998 in Brooklyn, 11237. It has 43 residential units across 6 floors. The owner of record is Knickerbocker Squareassociates L P. HPD has recorded 208 housing violations here, most recently on September 9, 2026. 17 of the 50 most recent violations are still open. City tax records listed 43 rent-stabilized apartments here in 2024.

HPD violations
208
DOB violations
29
ECB violations
9
HPD complaints
285

What to know

Concern
3 open Class C

Immediately hazardous issues among recent violations are still open.

Watch
Last violation Sep 9, 2026

Date of the most recent HPD inspection that found a problem.

Good
No unpaid ECB fines

No balance due on recent ECB violations.

Rent stabilization

Rent-stabilized units in 2024
43
About 100% of the building's 43 apartments

Counts come from owners' rent-stabilization filings shown on NYC Department of Finance tax bills, as extracted by JustFix. They tell you a building has stabilized apartments, not which ones.

Stabilized units by tax-bill year

Think your apartment is stabilized? Request its rent history from HCR (free), then check your renewal with the renewal calculator.

Violations

Most recent first. Showing up to 50 per agency.

HPD housing violations · 208

  • B

    Properly repair the source and abate the evidence of a water leak at ceiling in the bathroom located at apt 2f, 2nd story, 1st apartment from south at west

    Sep 9, 2026 · Apt 2F

    Open — Nov sent out
  • A

    Post a proper notice regarding rent stabilization law, in a form approved by the commissioner, in a conspicuous location within the common area at the buildings entrance. for more information about signage requirements, please visit: https://www.nyc.gov/site/hpd/services-and-information/required-signage.page

    Sep 9, 2026

    Open — Nov sent out
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the bathroom located at apt 2f, 2nd story, 1st apartment from south at west

    Sep 9, 2026 · Apt 2F

    Open — Nov sent out
  • C

    Abate the infestation consisting of mice in the entire apartment located at apt 2f, 2nd story, 1st apartment from south at west

    Sep 9, 2026 · Apt 2F

    Open — Notice of issuance sent to tenant
  • A

    File annual bedbug report in accordance with hpd rule as described on the back of this notice of violation or as described on hpds website, www.nyc.gov\hpd, search bed bugs.

    May 8, 2026

    Open — Nov sent out
  • C

    Replace or repair the self-closing doors that is missing or defective door at compactor closet, 5th story

    Nov 7, 2025

    Closed — Violation closed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling, east and west walls in the bathroom located at apt 4c, 4th story, 3rd apartment from west at north

    Jul 10, 2025 · Apt 4C

    Closed — Violation closed
  • A

    Cleanse to the satisfaction of this department the visible evidence of mold grout at east, west and south walls, at bathtub in the bathroom located at apt 4c, 4th story, 3rd apartment from west at north

    Jul 10, 2025 · Apt 4C

    Closed — Violation closed
  • C

    Properly repair with similar material the broken or defective ceramic tiles at south wall in the bathroom located at apt 4c, 4th story, 3rd apartment from west at north

    Jul 10, 2025 · Apt 4C

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges at the hopper door at compactor closet, 4th story

    Jul 10, 2025

    Closed — Violation closed
Show 40 more ↓
  • C

    Replace or repair the self-closing doors that is missing or defective latch set at the hopper door at compactor closet, 1st story

    Jul 10, 2025

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges at hopper door at compactor closet, 4th story

    Jul 9, 2025

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective latch set at hopper door at compactor closet, 1st story

    Jul 9, 2025

    Closed — Violation closed
  • B

    Properly repair the source and abate the evidence of a water leak at ceiling in the bathroom located at apt 4c, 4th story, 1st apartment from north at east

    Jun 25, 2025 · Apt 4C

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges at hopper door at public hall, 5th story

    Jun 25, 2025

    Closed — Violation closed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling and west wall in the bathroom located at apt 4c, 4th story, 1st apartment from north at east

    Jun 25, 2025 · Apt 4C

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges at trash chute hopper door at compactor closet, 5th story

    May 26, 2025

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges at building entrance door

    May 26, 2025

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective ... at compactor closet, 5th story

    Apr 2, 2025

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective hinges, at hopper door at compactor closet, 5th story

    Apr 2, 2025

    Closed — Violation closed
  • B

    Properly repair or replace the broken or defective baseboard heater cover in the 1st room from east located at apt 4b, 4th story, 2nd apartment from west at north

    Mar 26, 2025 · Apt 4B

    Open — Nov sent out
  • B

    Properly repair or replace the broken or defective lower window sash at 1st and 2nd window from east in the 1st room from east located at apt 4b, 4th story, 2nd apartment from west at north

    Mar 26, 2025 · Apt 4B

    Open — Nov sent out
  • B

    Properly repair or replace the broken or defective lower glass pane at 1st window from east in the 1st room from east located at apt 4b, 4th story, 2nd apartment from west at north

    Mar 26, 2025 · Apt 4B

    Open — Nov sent out
  • B

    Repair or replace the smoke detector missing in the entire apartment located at apt 4b, 4th story, 2nd apartment from west at north

    Mar 26, 2025 · Apt 4B

    Closed — Violation closed
  • B

    Repair or replace the carbon monoxide detecting device(s). missing in the entire apartment located at apt 4b, 4th story, 2nd apartment from west at north

    Mar 26, 2025 · Apt 4B

    Closed — Violation closed
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the west wall in the 2nd room from east located at apt 4b, 4th story, 2nd apartment from west at north

    Mar 26, 2025 · Apt 4B

    Open — Nov sent out
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color the ceiling in the bathroom located at apt 3f, 3rd story, 1st apartment from south at west

    Mar 26, 2025 · Apt 3F

    Closed — Violation closed
  • C

    Abate the infestation consisting of roaches in the entire apartment located at apt 2b, 2nd story, 2nd apartment from west at north

    Mar 26, 2025 · Apt 2B

    Open — Notice of issuance sent to tenant
  • B

    Refit door in the entrance located at apt 2b, 2nd story, 2nd apartment from west at north

    Mar 26, 2025 · Apt 2B

    Closed — Violation closed
  • A

    Paint with light colored paint to the satisfaction of this department at ceiling and north wall at public hall, 6th story

    Feb 13, 2025

    Closed — Violation closed
  • B

    Properly repair with similar material the broken or defective fire retardant material at ceiling at public hall, 6th story

    Feb 13, 2025

    Closed — Violation closed
  • B

    Properly repair the source and abate the evidence of a water leak at ceiling in the bathroom located at apt 4a, 4th story, 2nd apartment from west at north

    Jul 28, 2024 · Apt 4A

    Open — Not complied with
  • C

    Trace and repair the source and abate the visible mold condition... more than 30 sq ft at ceiling and south wall in the bathroom located at apt 4a, 4th story, 2nd apartment from west at north

    Jul 28, 2024 · Apt 4A

    Open — Not complied with
  • B

    Replace the broken or defective wash basin in the bathroom located at apt 4a, 4th story, 2nd apartment from west at north

    Jul 28, 2024 · Apt 4A

    Open — Not complied with
  • B

    Replace the broken or defective watercloset in the bathroom located at apt 4a, 4th story, 2nd apartment from west at north

    Jul 28, 2024 · Apt 4A

    Open — Not complied with
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at east wall in the bathroom located at apt 4a, 4th story, 2nd apartment from west at north

    Jul 28, 2024 · Apt 4A

    Open — Not complied with
  • B

    Provide a proper means of lighting for water closet compartment . in the bathroom located at apt 4a, 4th story, 2nd apartment from west at north

    Jul 28, 2024 · Apt 4A

    Open — Not complied with
  • C

    Replace or repair the self-closing doors that is missing or defective latch at building front entrance door , 1st story

    Jun 5, 2024

    Closed — Violation closed
  • B

    Properly repair or replace the broken or defective latch at building front entrance door , 1st story

    Jun 5, 2024

    Closed — Violation closed
  • C

    Trace and repair the source and abate the visible mold condition... approximately 35 sq.ft. at cieling in the 2nd bathroom from east located at apt 2c, 2nd story, 3rd apartment from north at east

    Jun 5, 2024 · Apt 2C

    Closed — Violation closed
  • C

    Replace or repair the self-closing doors that is missing or defective compactor closet door at public hall, 2nd story

    Jun 5, 2024

    Closed — Violation closed
  • C

    Abate the infestation consisting of mice in the entire apartment located at apt apt2c, 2nd story, 1st apartment from west at north

    May 12, 2024 · Apt APT2C

    Closed — Violation closed
  • C

    Trace and repair the source and abate the visible mold condition... approx 36 square feet at ceiling in the 2nd bathroom from north at west located at apt apt2c, 2nd story, 1st apartment from west at north

    May 12, 2024 · Apt APT2C

    Closed — Violation closed
  • B

    Properly repair or replace the broken or defective ventilation system at west wall in the 2nd bathroom from north located at apt apt2c, 2nd story, 1st apartment from west at north

    May 12, 2024 · Apt APT2C

    Closed — Violation closed
  • A

    Replace with new the missing ceramic soap dish at south wall in bathtub in the 2nd bathroom from north located at apt apt2c, 2nd story, 1st apartment from west at north

    May 12, 2024 · Apt APT2C

    Closed — Violation closed
  • B

    Trace and repair the source and abate the visible mold condition... at east wall approx.2 sq ft in the bathroom located at apt 4c, 4th story, 1st apartment from west at north original violation 16939852 issued 30-apr-24 has been upgraded to class b per administrative code §27-2017.3a(3)(a) or (b).

    Apr 30, 2024 · Apt 4C

    Open — Defect letter issued
  • B

    Repair the broken or defective plastered surfaces and paint in a uniform color at ceiling in the bathroom located at apt 4c, 4th story, 1st apartment from west at north

    Apr 30, 2024 · Apt 4C

    Closed — Violation closed
  • B

    Properly repair the source and abate the evidence of a water leak at ceiling in the bathroom located at apt 4c, 4th story, 1st apartment from west at north

    Apr 30, 2024 · Apt 4C

    Closed — Violation closed
  • B

    Properly repair or replace the broken or defective mechanical ventilation system at ceiling in the bathroom located at apt 4c, 4th story, 1st apartment from west at north

    Apr 30, 2024 · Apt 4C

    Closed — Violation closed
  • B

    Properly repair or replace the broken or defective lower counter balance at 1st and 2nd window from north at east in the 3rd room from north located at apt 4c, 4th story, 1st apartment from west at north

    Apr 30, 2024 · Apt 4C

    Closed — Violation closed

DOB building violations · 29

  • Low pressure boiler boiler required

    Violation issued-failure to file 2019 external low pressure inspection

    Jun 20, 2023

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued-failure to file 2019 external low pressure inspection

    Jun 20, 2023

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued-failure to file 2019 external low pressure inspection

    Jun 20, 2023

    Dob violation - active
  • Low pressure boiler boiler required

    Violation issued-failure to file 2019 external low pressure inspection

    Jun 20, 2023

    Dob violation - active
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Nov 29, 2021

    Dob violation - active
  • Fail to certify class 1 none

    Failure to certify correction on immediately hazardous (class 1) ecb violation

    Sep 29, 2021

    Dob violation - active
  • Construction other optional

    Due to multiple cracks throughout entire apartment. at apartment 5b and lobby there are cracks in the floors, walls and ceiling

    Jul 2, 2021

    Dob violation - active
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Oct 21, 2020

    Dob violation - resolved
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Oct 14, 2019

    Dob violation - resolved
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Oct 14, 2019

    Dob violation - resolved
Show 19 more ↓
  • Fail to certify class 1 none

    Failure to certify correction on immediately hazardous (class 1) ecb violation

    Jun 26, 2019

    Dob violation - active
  • Fail to certify class 1 none

    Failure to certify correction on immediately hazardous (class 1) ecb violation

    Jun 26, 2019

    Dob violation - active
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Sep 9, 2016

    Dob violation - resolved
  • Residential elevator periodic inspection/test elevatorrequired

    Failure to perform category 5 inspection

    Jun 1, 2016

    Dob violation - dismissed
  • Failure to benchmark none

    Failure to file benchmarking report of energy use as per ad. code sec. 28-309.4

    Jun 3, 2013

    Dob violation - dismissed
  • Failure to benchmark none

    Failure to file benchmarking report of energy use as per ad. code sec. 28-309.4

    May 3, 2012

    Dob violation - dismissed
  • Failure to benchmark none

    Failure to file benchmarking report of energy use as per ad. code sec. 28-309.4

    Jan 1, 2012

    Dob violation - dismissed
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Nov 30, 2011

    Dob violation - resolved
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Jun 1, 2010

    Dob violation - resolved
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Mar 26, 2009

    Dob violation - resolved
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jan 1, 2009

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jan 1, 2009

    Dob violation - active
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Jan 1, 2009

    Dob violation - active
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Oct 29, 2008

    Dob violation - resolved
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Oct 28, 2007

    Dob violation - resolved
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Nov 28, 2006

    Dob violation - resolved
  • Elevator elevatorrequired

    E-elevator elevatorrequired

    Dec 19, 2005

    Dob violation - resolved
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Mar 19, 2003

    Dob violation - dismissed
  • Boilers boiler required

    Ll6291-local law 62/91 - boilers boiler required

    Mar 19, 2003

    Dob violation - dismissed

ECB violations · 9

  • Class - 2

    Main line can be opened when power on. unreadable main line fuse. inoperative car phone.

    Aug 19, 2025 · Penalty $1,562

    Resolve
  • Class - 2

    Failure to maintain bldg in codecompliant manner atoi@apt5b observed minor cracks@ceiling&fl&walls@various locations repair &/or replace

    Oct 21, 2021 · Penalty $625

    Active
  • Class - 2

    Failure to comply w/the commissioner's order contained in summons/violation #35507805h issued on 07/02/21 & to file a certificate of correction pursuant to 28-201.1 & 1rcny 102-01.remedy:comply w/commissioner's

    Sep 2, 2021 · Penalty $3,125

    Resolve
  • Class - 1

    Failure to maintain building in a code compliant manner.at time of inspection at apartment 5b there are multiple cracks throughout on the floors,walls,and ceiling.remedy:repair and/or replace.

    Jul 2, 2021 · Penalty $1,250

    Active
  • Class - 1

    Cu05x18,cu32h17,cu39m17,61b07,67x10,68b07,cu97o11,99bb05. cu05x17-doorrestrictor; cu32h17-worn guide shoes; cu39m17-steading plates are missing; 61b07-maintenance sticker; 67x10-phone not working; 68b07-mainten

    Apr 7, 2019 · Penalty $6,250

    Active
  • Class - 1

    97x17 upon inspection this device was found to be out of service creating a hazardous condition as per 1rcny 11-02. restore to service immediately and notify nycdob by calling 212-393-2520 and email eir@build

    Apr 7, 2019 · Penalty $6,250

    Active
  • Class - 2

    Failure to file a final inspection for completed work within 1 year of permit expiration.premises under p.c. att2#320307994 which permits expired 5-23-12.application filed to install new gas fired high efficien

    Jul 24, 2018 · Penalty $6,250

    Active
  • Non-hazardous

    83x10 83x repair & restore to service

    Jun 7, 2005

    Resolve
  • Non-hazardous

    83x10.(83) repair & restore elevator to service so that a full inspection can be made by this dept.

    May 13, 2005

    Resolve

Complaints

  • Door/window

    Window frame

    Aug 29, 2026 · Apt 2F

    Close
  • Paint/plaster

    Ceiling

    Aug 29, 2026 · Apt 2F

    Close
  • Water leak

    Slow leak

    Aug 29, 2026 · Apt 2F

    Close
  • Door/window

    Door

    Aug 29, 2026 · Apt 2F

    Close
  • Unsanitary condition

    Pests

    Aug 29, 2026 · Apt 2F

    Close
  • Unsanitary condition

    Pests

    Aug 29, 2026 · Apt 2F

    Close
  • Heat/hot water

    Entire building

    Feb 2, 2026 · Apt 3B

    Close
  • Heat/hot water

    Entire building

    Jan 29, 2026 · Apt 3D

    Close
  • Heat/hot water

    Entire building

    Jan 27, 2026 · Apt 4F

    Close
  • Plumbing

    Bathtub/shower

    Dec 5, 2025 · Apt 5D

    Close
Show 40 more ↓
  • Unsanitary condition

    Mold

    Oct 27, 2025 · Apt 5B

    Close
  • Heat/hot water

    Entire building

    Oct 13, 2025 · Apt 4H

    Close
  • Paint/plaster

    Ceiling

    Aug 6, 2025 · Apt 5C

    Close
  • Paint/plaster

    Wall

    Aug 6, 2025 · Apt 5C

    Close
  • Appliance

    Electric/gas range

    Jul 26, 2025 · Apt 3F

    Close
  • Plumbing

    Bathtub/shower

    Jul 2, 2025 · Apt 4C

    Close
  • Unsanitary condition

    Mold

    Jul 2, 2025 · Apt 4C

    Close
  • Plumbing

    Bathtub/shower

    May 20, 2025 · Apt 5D

    Close
  • Door/window

    Door

    May 20, 2025 · Apt 5D

    Close
  • Heat/hot water

    Apartment only

    Apr 11, 2025 · Apt 6D

    Close
  • Plumbing

    Bathtub/shower

    Apr 3, 2025 · Apt 5D

    Close
  • Unsanitary condition

    Pests

    Apr 3, 2025 · Apt 5D

    Close
  • Heat/hot water

    Entire building

    Mar 2, 2025 · Apt 1B

    Close
  • Heat/hot water

    Entire building

    Jan 22, 2025 · Apt BLDG

    Close
  • Unsanitary condition

    Mold

    Oct 16, 2024 · Apt 3B

    Close
  • Door/window

    Door

    Oct 16, 2024 · Apt 3B

    Close
  • Door/window

    Door

    Oct 8, 2024 · Apt 3B

    Close
  • Unsanitary condition

    Mold

    Jul 22, 2024 · Apt 4A

    Close
  • Plumbing

    Basin/sink

    Jul 22, 2024 · Apt 4A

    Close
  • Electric

    No lighting

    Jul 22, 2024 · Apt 4A

    Close
  • Water leak

    Damp spot

    May 8, 2024 · Apt APT2C

    Close
  • Unsanitary condition

    Mold

    May 8, 2024 · Apt APT2C

    Close
  • Door/window

    Window frame

    Apr 17, 2024 · Apt 4C

    Close
  • Unsanitary condition

    Mold

    Apr 17, 2024 · Apt 4C

    Close
  • Heat/hot water

    Apartment only

    Jan 23, 2024 · Apt 5D

    Close
  • Heat/hot water

    Entire building

    Jan 18, 2024 · Apt BLDG

    Close
  • Heat/hot water

    Apartment only

    Jan 16, 2024 · Apt 6G

    Close
  • Paint/plaster

    Wall

    Dec 31, 2023 · Apt 4B

    Close
  • Unsanitary condition

    Pests

    Dec 31, 2023 · Apt 4B

    Close
  • General

    Cabinet

    Dec 28, 2023 · Apt 1B

    Close
  • Plumbing

    Bathtub/shower

    Dec 28, 2023 · Apt 1B

    Close
  • Plumbing

    Toilet

    Dec 28, 2023 · Apt 1B

    Close
  • Unsanitary condition

    Pests

    Nov 6, 2023 · Apt 5D

    Close
  • Unsanitary condition

    Pests

    Nov 6, 2023 · Apt 5D

    Close
  • Plumbing

    Bathtub/shower

    Nov 6, 2023 · Apt 5D

    Close
  • Unsanitary condition

    Mold

    Aug 9, 2023 · Apt 3A

    Close
  • General

    Janitor/super

    Aug 9, 2023 · Apt 3A

    Close
  • Electric

    Power outage

    Jul 18, 2023 · Apt 6F

    Close
  • Electric

    Wiring

    Jul 18, 2023 · Apt 6F

    Close
  • Paint/plaster

    Ceiling

    Jul 18, 2023 · Apt 6F

    Close

Sales history

No recorded sales in our data

Sales come from the NYC Department of Finance rolling sales file.

Building details

Building type
Elevator apartment building (D1)
Year built
1998
Floors
6
Residential units
43
Building area
61,650 ft²
Lot area
13,287 ft²
Zoning
R6
Community board
304
Council district
37
Block / lot
3335 / 1
Assessed value
$2,102,850
Landmark / historic district
No

HPD registration #377718, last renewed Sep 25, 2025.

Questions about 561 Knickerbocker Avenue

Who owns 561 Knickerbocker Avenue?

The owner of record in NYC Department of City Planning PLUTO data is Knickerbocker Squareassociates L P.

Does 561 Knickerbocker Avenue have violations?

Yes. NYC HPD has recorded 208 housing violations at this property.

Is 561 Knickerbocker Avenue rent stabilized?

NYC Department of Finance tax bills listed 43 rent-stabilized units here in 2024 (about 100% of its 43 apartments). To confirm a specific apartment, request its rent history from NYS Homes and Community Renewal.

When was 561 Knickerbocker Avenue built?

City records list 1998 as the year it was built.

How many apartments are in 561 Knickerbocker Avenue?

It has 43 residential units.

Source: NYC Open Data (DCP PLUTO, HPD, DOB, ECB/OATH, DOF). Records can lag the city's systems. Data refreshed weekly.